Figure 5.

Plot of pore diameter vs time at different temperatures. This plot is based on TEM micrographs of different nanopores processed at different
temperatures. No change in pore size is seen after 20 min at 900°C. The pore shrinkage
rate increased with increasing temperature. Note: average diameter of the nanopore
= sqrt (long axis × short axis). All the shrinking processes show almost linear shrinking
behavior.